I recently had to contact my doctors surgery several times, to get appointments, check that referrals to hospital had been made, query prescription etc. On each occasion I was treated with respect and care by the receptionists who answered my questions and checked information on my records. The last time, a very nice man was very reassuring about a change of dosage on a prescription, he was able to confirm it was not a mistake but was linked to a follow up letter from a hospital consultant which I had not read thoroughly.
I took the trouble to thank him and asked him to pass on my appreciation to the rest of the team. He was quite taken aback and emotional that I had bothered to thank him, I guess it made a change from the abuse he must get by disgruntled patients.
If someone goes out of their way to help me, I try to thank them rather than take it for granted.